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add .onLoad() and .onAttach() functions which call use_credentials() … #184

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add .onLoad() and .onAttach() functions which call use_credentials() … #184

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add .onLoad() and .onAttach() functions which call use_credentials() …
dtenenba Dec 7, 2017
746cc7c
make changes per @leeper -
dtenenba Feb 23, 2018
b9f2f5c
check for existence of credendial file before calling use_credentials()
dtenenba Feb 23, 2018
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18 changes: 18 additions & 0 deletions R/utils.R
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Original file line number Diff line number Diff line change
Expand Up @@ -127,3 +127,21 @@ flatten_list <- function(x) {
return(x)
}
}

# This function gets called on package load.
.onLoad <- function(libname, pkgname) {
# If credentials are in environment variables, use those.
creds <- aws.signature::locate_credentials()
if (!all(is.null(creds$key), is.null(creds$secret))) {
return(invisible(NULL))
}
# Load default AWS credentials so calls to S3 'just work', allowing
# the package to behave like the AWS CLI
if (file.exists(aws.signature::default_credentials_file())) {
if (nchar(Sys.getenv("AWS_PROFILE"))) {
aws.signature::use_credentials(Sys.getenv("AWS_PROFILE"))
} else {
aws.signature::use_credentials()
}
}
}